* check palindrome number

Author: yangguang_chen

README.md

@@ -3,6 +3,7 @@
 ## go solution
 - [1.two-sum](./src/1-TwoSum/1-two-sum.go)
 - [7.reverse-integer](./src/7-ReverseInteger/7-reverse-integer.go)
+- [9.palindrome-number](./src/9-PalindromeNumbe/palindrome_num.go)
 - [14.longest-common-prefix](./src/14-LongestCommonPrefix/14_longest_common_prefix.go)
 - [27.remove-element](./src/27-RemoveElement/rm_ele.go)
 - [35.search-insert-position](./src/35-SearchInsertPosition/search_insert_position.go)

src/70-ClimbingStairs/climb_stairs.go

@@ -0,0 +1,12 @@
+package cs
+
+// ClimbStairs calculate n steps to reach the top
+// You are climbing a stair case. It takes n steps to reach to the top.
+// Each time you can either climb 1 or 2 steps.
+// In how many distinct ways can you climb to the top?
+// Note: Given n will be a positive integer.
+// see more from https://leetcode.com/problems/climbing-stairs/description/
+func ClimbStairs(n int) int {
+
+	return count
+}

src/70-ClimbingStairs/climb_stairs_test.go

@@ -0,0 +1,14 @@
+package cs
+
+import (
+	"testing"
+)
+
+func TestClimbStairs(t *testing.T) {
+	var n = 6
+	nums := ClimbStairs(n)
+	if nums != 8 {
+		t.Error("fail")
+	}
+	t.Log(nums)
+}

src/9-PalindromeNumber/palindrome_num.go

@@ -0,0 +1,23 @@
+package pn
+
+import (
+	"strconv"
+	"strings"
+)
+
+// PalindromeNumber Determine whether an integer is a palindrome.
+// An integer is a palindrome when it reads the same backward as forward.
+
+func PalindromeNumber(x int) bool {
+	if x < 0 {
+		return false
+	}
+	arr := strings.Split(strconv.Itoa(x), "")
+	lens := len(arr)
+	for k, v := range arr {
+		if k <= (lens/2) && v != arr[lens-1-k] {
+			return false
+		}
+	}
+	return true
+}

src/9-PalindromeNumber/palindrome_num_test.go

@@ -0,0 +1,25 @@
+package pn
+
+import (
+	"testing"
+)
+
+func TestPalindromeNumber(t *testing.T) {
+	var num = 343
+	if ok := PalindromeNumber(num); !ok {
+		t.Error(num, " is not a palindrome number. ")
+	}
+	t.Log(num)
+
+	num = 12345321
+	if ok := PalindromeNumber(num); !ok {
+		t.Error(num, " is not a palindrome number. ")
+	}
+	t.Log(num)
+
+	num = -121
+	if ok := PalindromeNumber(num); !ok {
+		t.Error(num, " is not a palindrome number. ")
+	}
+	t.Log(num)
+}